Java Code Examples for com.jcraft.jsch.session#setServerAliveInterval()

List<String> execSSHCommand(String command) throws JSchException, IOException {
    JSch jSch = new JSch();

    Window loadingWindow = showLoadingWindow("SSH exec: " + command);

    Session session = jSch.getSession(view.username, view.host, 22);
    session.setDaemonThread(true);
    session.setTimeout(3600000);
    session.setServerAliveInterval(15000);
    session.setConfig("StrictHostKeyChecking", "no");
    session.setPassword(view.password);
    try {
        session.connect();

        Channel channel = session.openChannel("exec");
        ((ChannelExec)channel).setCommand(command);
        channel.setInputStream(null);
        InputStream input = channel.getInputStream();
        channel.connect();
        List<String> result = new BufferedReader(new InputStreamReader(input)).lines().collect(Collectors.toList());

        channel.disconnect();
        session.disconnect();
        return result;
    } finally {
        loadingWindow.close();
    }
}
 

private Session createSftpSession(JSch jsch, boolean withUserInfo) throws JSchException {
    LOGGER.fine("Creating new SFTP session...");
    String host = configuration.getHost();
    int port = configuration.getPort();
    int timeout = configuration.getTimeout() * 1000;
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.log(Level.FINE, "Will connect to {0} [timeout: {1} ms]", new Object[] {host, timeout});
    }
    int keepAliveInterval = configuration.getKeepAliveInterval() * 1000;
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.log(Level.FINE, "Keep-alive interval is {0} ms", keepAliveInterval);
    }
    String username = configuration.getUserName();
    String password = configuration.getPassword();
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.log(Level.FINE, "Login as {0}", username);
    }
    Session session = jsch.getSession(username, host, port);
    if (StringUtils.hasText(password)) {
        session.setPassword(password);
    }
    // proxy
    setProxy(session, host);
    if (withUserInfo) {
        LOGGER.fine("Setting user info...");
        session.setUserInfo(new SftpUserInfo(configuration));
    }
    session.setTimeout(timeout);
    // keep-alive
    if (keepAliveInterval > 0) {
        session.setServerAliveInterval(keepAliveInterval);
    }
    return session;
}
 

private Session startNewSession(boolean acquireChannel) throws JSchException, InterruptedException {
    Session newSession = null;
    final AtomicBoolean cancelled = new AtomicBoolean(false);

    ConnectingProgressHandle.startHandle(env, new Cancellable() {
        @Override
        public boolean cancel() {
            cancelled.set(true);
            return true;
        }
    });

    try {
        while (!cancelled.get()) {
            try {
                newSession = jsch.getSession(env.getUser(), env.getHostAddress(), env.getSSHPort());
                int serverAliveInterval = Integer.getInteger("jsch.server.alive.interval", 0); // NOI18N
                if (serverAliveInterval > 0) {
                    newSession.setServerAliveInterval(serverAliveInterval);
                    int serverAliveCount = Integer.getInteger("jsch.server.alive.count", 5); // NOI18N
                    newSession.setServerAliveCountMax(serverAliveCount);
                }
                newSession.setUserInfo(userInfo);

                for (Entry<String, String> entry : jschSessionConfig.entrySet()) {
                    newSession.setConfig(entry.getKey(), entry.getValue());
                }
                Authentication auth = Authentication.getFor(env);
                final String preferredAuthKey = "PreferredAuthentications"; // NOI18N
                if (!jschSessionConfig.containsKey(preferredAuthKey)) {
                    String methods = auth.getAuthenticationMethods().toJschString();
                    if (methods != null) {
                        log.finest("Setting auth method list to " + methods); //NOI18N
                        newSession.setConfig(preferredAuthKey, methods);
                    }
                }
                if (USE_JZLIB) {
                    newSession.setConfig("compression.s2c", "[email protected],zlib,none"); // NOI18N
                    newSession.setConfig("compression.c2s", "[email protected],zlib,none"); // NOI18N
                    newSession.setConfig("compression_level", "9"); // NOI18N
                }

                if (RemoteStatistics.COLLECT_STATISTICS && RemoteStatistics.COLLECT_TRAFFIC) {
                    newSession.setSocketFactory(MeasurableSocketFactory.getInstance());
                }

                newSession.connect(auth.getTimeout()*1000);
                break;
            } catch (JSchException ex) {
                if (!UNIT_TEST_MODE) {
                    String msg = ex.getMessage();
                    if (msg == null) {
                        throw ex;
                    }
                    if (msg.startsWith("Auth fail") || msg.startsWith("SSH_MSG_DISCONNECT: 2")) { // NOI18N
                        PasswordManager.getInstance().clearPassword(env);
                    }
                } else {
                    throw ex;
                }
            } catch (CancellationException cex) {
                cancelled.set(true);
            }
        }

        if (cancelled.get()) {
            throw new InterruptedException("StartNewSession was cancelled ..."); // NOI18N
        }

        // In case of any port-forwarding previously set for this env
        // init the new session appropriately
        portForwarding.initSession(newSession);

        sessions.put(newSession, new AtomicInteger(JSCH_CHANNELS_PER_SESSION - (acquireChannel ? 1 : 0)));

        log.log(Level.FINE, "New session [{0}] started.", new Object[]{System.identityHashCode(newSession)}); // NOI18N
    } finally {
        ConnectingProgressHandle.stopHandle(env);
    }
    return newSession;
}